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// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package fake
import (
"strings"
"testing"
)
func TestApplyEdit(t *testing.T) {
tests := []struct {
label string
content string
edits []Edit
want string
wantErr bool
}{
{
label: "empty content",
},
{
label: "empty edit",
content: "hello",
edits: []Edit{},
want: "hello",
},
{
label: "unicode edit",
content: "hello, 日本語",
edits: []Edit{{
Start: Pos{Line: 0, Column: 7},
End: Pos{Line: 0, Column: 10},
Text: "world",
}},
want: "hello, world",
},
{
label: "range edit",
content: "ABC\nDEF\nGHI\nJKL",
edits: []Edit{{
Start: Pos{Line: 1, Column: 1},
End: Pos{Line: 2, Column: 3},
Text: "12\n345",
}},
want: "ABC\nD12\n345\nJKL",
},
{
label: "end before start",
content: "ABC\nDEF\nGHI\nJKL",
edits: []Edit{{
End: Pos{Line: 1, Column: 1},
Start: Pos{Line: 2, Column: 3},
Text: "12\n345",
}},
wantErr: true,
},
{
label: "out of bounds line",
content: "ABC\nDEF\nGHI\nJKL",
edits: []Edit{{
Start: Pos{Line: 1, Column: 1},
End: Pos{Line: 4, Column: 3},
Text: "12\n345",
}},
wantErr: true,
},
{
label: "out of bounds column",
content: "ABC\nDEF\nGHI\nJKL",
edits: []Edit{{
Start: Pos{Line: 1, Column: 4},
End: Pos{Line: 2, Column: 3},
Text: "12\n345",
}},
wantErr: true,
},
}
for _, test := range tests {
test := test
t.Run(test.label, func(t *testing.T) {
lines := strings.Split(test.content, "\n")
newLines, err := editContent(lines, test.edits)
if (err != nil) != test.wantErr {
t.Errorf("got err %v, want error: %t", err, test.wantErr)
}
if err != nil {
return
}
if got := strings.Join(newLines, "\n"); got != test.want {
t.Errorf("got %q, want %q", got, test.want)
}
})
}
}
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